ply subfloor

[Colbs]

Hi guys ive now leveled off my floor and am ready to start laying my Plywood subfloor.Ive got my 6mm ply sorted and im about to start screwing it down,how spaced out should the screws be and should it just be the perimeter of the sheet that gets screwed or the whole width in a grid fashion?
Also has anybody used lecol 5500 adhesive for parquet on clean blocks (bitumen completely removed),what is the time period before the blocks can be walked on?. Thanks in advance guys.

 

[WoodYouLike]

Every 25 cm and all over the sheets, not just the perimeter.

If you got hold of Lecol5500, be aware it is very old stock (manufacturer stopped producing it before June 2010!) and will have lost some if not all of its gripping power. So, don't apply too much at once on the floor, it could dry out before your eyes!